Subject description - AE1B14SP1
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Explanatory Notes
Instructions
Anotation:
Electric drive and its components. Electromechanical energy conversion. Rotational converters - DC machines, induction motors, synchronous generators and motors. Special electric machines, actuators. Static converters - transformers. There are presented operational principles, main constructional scheme and characteristics, applications. Switching theory. Interaction between turn-off switch and switched circuit. Basic theory and characteristic of electric arc. Transient recovery voltage. Switching overvoltage. Low voltage protection apparatuses
Course outlines:
| 1. | | Electric drive and its components. Electromechanical energy conversion. Electrotechnical laws application |
| 2. | | DC machines, principles, design, main characteristics. Generators and motors |
| 3. | | Starting and braking of motors. Common DC machine characteristics, commutation principles |
| 4. | | Transformers, principles and design, main characteristics. Three-phase transformer winding accouplement |
| 5. | | Main work states, parallel operation. AC rotating electromechanical converters, rotating magnetic field |
| 6. | | Induction machines, principles, use, characteristics. Single-phase induction motor |
| 7. | | Energetic electric machines. Synchronous generators. Synchronous motors, principles, constructional design |
| 8. | | Introduction to switching problems. Switching apparatus operational principles. Switching arc in circuit breakers |
| 9. | | DC current interrupting, Influence of circuit induction and disconnecting speed on switching over-voltage |
| 10. | | AC current interrupting. Influence of an arc voltage, breaking current deformation |
| 11. | | Transient recovery voltage (TRV). Influence of TRV on the switching process |
| 12. | | Switching over-voltage in AC circuits. Small inductive current- and capacitive current breaking |
| 13. | | Circuits breakers for low voltage circuits, characteristics and application rules |
| 14. | | Protecting apparatuses - residual current circuit breakers, over-voltage arresters |
Exercises outline:
| 1. | | Introduce to labs, security laws, laboratory rule, adjustable sources and their control |
| 2. | | Starting and reversation of DC motors. Torque- and speed measurement. Tachodynamo calibration |
| 3. | | Independent excited motor - load characteristics |
| 4. | | Speed control of independent excited DC motor |
| 5. | | Transformer - no load and short circuit operation measurement, standby circuit |
| 6. | | Induction motor - starting, mechanical characteristics |
| 7. | | Synchronous generator - synchronizing with the network, operation on the network |
| 8. | | Contactor combinations |
| 9. | | Programmable relay in distributor boxes control - I 10.Programmable relay in distributor boxes control - II |
| 11. | | Overcurrent relais, switching characteristics |
| 12. | | Contactors V - C characteristics |
| 13. | | Contactor current path overheating measurement |
| 14. | | Reparation measurements, credit |
Literature:
| 1. | | Chapman,S.J.: Electric Machinery Fundamentals, McGraw-Hill, 1985 |
| 2. | | Flurscheim, C.H., Power Circuit Breaker, Theory and Design. IEE.1982 |
Requirements:
Active participation on laboratory measurement, document administration in due form, measure result processing, submit of test reports
Subject is included into these academic programs:
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| Page updated 22.4.2025 17:56:22, semester: Z,L/2024-5, L/2026-7, Z,L/2025-6, Z/2026-7, Send comments about the content to the Administrators of the Academic Programs |
Proposal and Realization: I. Halaška (K336), J. Novák (K336) |